JP2000110270A - Roof cooling structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently cool a whole roof in an approximately uniform manner with a simple constitution in a roof cooling structure to cool a roof of approximately corrugated section. SOLUTION: A water absorbing paper 16 is attached to each corrugated recessed part 14a of a folding roof 14 formed at a specified gradient so as to cover the surface in an approximately and closely attaching manner, and a cooling water is fed to each water absorbing paper 16 from a nozzle 20 of a water feeding means 18 on an upper end part of the gradient of each corrugated recessed part 14a. The cooling water is infiltrated approximately over the whole area of each water absorbing paper 16 through the capillary phenomenon, the surface of the folding roof 14 covered with each water absorbing paper 16 is maintained in a wet condition (wet surface) approximately over the whole area, and approximately whole area of the folding roof 14 is cooled in an approximately uniform manner with the vaporization latent heat when the cooling water is vaporized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof cooling structure, and more particularly to a structure for cooling a roof having a substantially corrugated cross section.

[0002]

2. Description of the Related Art In a building such as a factory or a work place, a simple structure such as a folded plate roof is often used as a roof structure. In the case of such a roof structure, when the sunshine is strong, such as during a sunny day in summer, the indoor space becomes hot due to the solar radiation on the roof.

On the other hand, for example, Japanese Patent Laid-Open No.
As disclosed in Japanese Patent Publication No. 0, the use of a roof cooling structure that sprays water on the surface of the roof makes it possible to cool the roof with its latent heat of vaporization.

[0004]

However, at that time, in a structure in which water is simply sprinkled, the water flows down the roof surface in a short time, so that the cooling efficiency with respect to the water supply amount is poor, and the entire surface of the roof is poor. Since it is difficult to spray water, there is a problem that the entire roof cannot be cooled uniformly.

The present invention has been made in view of such circumstances, and in a roof cooling structure for cooling a roof having a substantially corrugated cross section, the entire roof is efficiently and substantially uniformly cooled with a simple configuration. It is an object of the present invention to provide a roof cooling structure that can be used.

[0006]

The present invention achieves the above object by employing a cooling structure using a predetermined water-absorbing coating material.

That is, according to the first aspect of the present invention, there is provided a roof cooling structure for cooling a roof having a substantially corrugated cross section, such that the roof cooling structure substantially adheres to the surface of the roof. It is characterized by comprising a water-absorbing coating material covering substantially the entire area of each corrugated concave portion of the roof, and water supply means for supplying cooling water to the water-absorbing coating material.

The "roof" is not particularly limited in its specific shape, material and the like as long as it has a substantially corrugated cross section. For example, a folded roof, a slate corrugated roof Etc. can be adopted.

The above-mentioned "water-absorbing coating material" is not particularly limited as long as it has a water-absorbing property and can be used as a coating. A water-absorbing coating member such as glass wool or rock wool, or a water-absorbing coating layer formed by applying a paint containing a water-absorbing particulate substance to the surface of a roof can be employed. The “water-absorbing coating material” is configured to “cover substantially the entire area of each corrugated recess”, but may be configured to cover other areas.

[0010] "Supplying cooling water to the water-absorbing coating material"
The specific method for this is not particularly limited, and for example, a method of dropping and supplying cooling water to a predetermined position of the water-absorbing coating material, a method of spraying and supplying water with a sprinkler or the like can be adopted.

[0011]

As described above, in the roof cooling structure according to the present invention, the water-absorbing coating material covering substantially the entire area of each corrugated concave portion of the roof having a substantially corrugated cross section is provided on the surface of the roof. Since the cooling water is supplied to the water-absorbing coating material, the cooling water penetrates into the water-absorbing coating material by capillary action, and is covered with the water-absorbing coating material. The surface of the roof can be maintained in a wet state (wet surface) over substantially the entire area. Thus, the entire roof can be substantially uniformly cooled by the latent heat of vaporization when the cooling water evaporates. That is, by employing such a roof cooling structure, the surface temperature of the roof can be reduced to the maximum wet bulb temperature at that time.

The amount of cooling water to be supplied to the water-absorbing coating material is sufficient to maintain the water-absorbing coating material in a wet state, and this is effectively used for cooling the roof. Can be increased.

Therefore, according to the present invention, in a roof cooling structure for cooling a roof having a substantially corrugated cross section,
With a simple configuration, the entire roof can be efficiently and substantially uniformly cooled. Thus, radiant heat from the roof surface to the indoor space below the roof can be reduced, and the environment can be improved.

In the above-mentioned structure, if a covering member is provided so as to abut on and cover each corrugated top of the roof as described in claim 2, the following operation and effect can be obtained. Can be.

That is, when the water-absorbing coating material is provided on the surface of the roof by attaching water-absorbing paper or the like, the water-absorbing coating material may flow out due to a large amount of rainwater, or may be absorbed by strong wind. The water-soluble coating material may be scattered, and the ultraviolet absorbent may deteriorate the water-absorbing coating material, or light may cause plants to grow from the water-absorbing coating material. Further, foreign substances such as dust and fallen leaves may accumulate on the water-absorbing coating material.

Therefore, all or a part of the above-mentioned problems can be solved by providing a covering member that covers and covers each corrugated top of the roof.

The specific structure of the "covering member" is not particularly limited, and for example, a flat plate such as a resin plate or a steel plate, a folded plate, a heat insulating material, a blind, or the like can be used.

In this case, if the covering member is made of a water-impermeable member such as a flat plate or a folded plate, almost all of the above problems can be solved. Become.

If the covering member is made of a heat insulating material instead of the above method, most of the above-mentioned problems can be substantially solved, and the heat generated by the solar radiation can be solved. The temperature rise of the roof can be suppressed. In addition, by providing the heat insulating material, it is possible to reduce heat loss in the building indoor space in winter, and to prevent dew condensation.

Further, if the covering member is formed of an interdigital member as described in claim 5, the above problems can be solved to some extent, and the following operation and effect can be obtained. Can be. That is, since the space formed between each corrugated recess of the roof and the covering member is not sealed, the provision of the covering member greatly impedes the evaporation of the cooling water that has permeated the water-absorbing coating material. Can be prevented. In addition, it is also possible to perform sprinkling by a sprinkler or the like. Here, the term "border-shaped member" means a planar member having many gaps, and includes not only blinds but also reeds, nets, perforated plates, and the like.

In the case where the above-mentioned covering member is provided, it is necessary to promote ventilation of the space formed between each corrugated concave portion of the roof and the heat insulating material to lower the humidity, thereby reducing the moisture absorbing coating material. This is preferable from the viewpoint of continuously and efficiently evaporating the cooling water that has permeated the water.

The above-mentioned “roof” can be a so-called land roof, but it is better to make the roof slightly wet, so that the surface of the roof covered with the water-absorbent coating material is wet over the entire area. Becomes easier.

From such a viewpoint, when the covering member is provided, the roof is formed with a predetermined slope, and each corrugated recess and the covering member are formed at the upper end of the slope. By providing a ventilation promoting structure for promoting ventilation of the space between the roof surface and the roof surface, the latent heat of vaporization can be continuously removed from the roof surface with high efficiency, thereby further improving the cooling efficiency.

The "ventilation promoting structure" may be constituted by a forced ventilation device using an exhaust fan or the like, but as described in claim 7, a structure provided with a heat collecting member heated by solar heat. Then, natural convection due to the chimney effect can be easily generated in the space between each corrugated concave portion and the heat insulating material, so that the ventilation of the space can be promoted with a simple configuration and without requiring new driving energy. Can be. Moreover,
It is necessary to enhance the cooling efficiency by promoting ventilation in such a case when the solar radiation is strong, and in such a case, the solar heat energy for heating the heat collecting member is large. It can be carried out. The “heat collecting member” is not particularly limited in its shape, material, and the like as long as it is a member that is more easily heated by solar heat than a normal outer wall material.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described.

First, a first embodiment of the present invention will be described.

FIG. 1 shows a roof cooling structure 1 according to this embodiment.
FIG. 2 is a perspective view showing a building 12 provided with a reference numeral 0, FIG. 2 is a plan view of a main part thereof, and FIG.

As shown in these figures, the building 12 uses a folded plate roof 14 having a slight downward slope toward the near side as the structure of the roof.

The folded-plate roof 14 is made of a steel plate coated with a surface having a substantially corrugated cross section in which corrugated concave portions 14a are formed at substantially equal intervals in the purlin direction.
, Water-absorbing paper 16 is stuck to each of the folded-plate roofs 14 so as to be in close contact with the surface thereof.

In this embodiment, the roof cooling structure 10 is constituted by the plurality of water-absorbing papers 16 and the water supply means 18 for supplying cooling water to each of the water-absorbing papers 16.

The water supply means 18 includes a plurality of nozzles 20 provided to open near the upper end of the slope in each corrugated recess 14a, a water supply pipe 22 connected to each of the nozzles 20, and a water supply pipe 22. And a water supply pump 26 for pumping and supplying water from a water supply source (a water pipe or a water storage tank) 24. A flow control valve (not shown) is provided at the connection between each nozzle 20 and the water supply pipe 22 so that water is supplied to each nozzle 20 substantially uniformly.

As shown in FIG. 4, each of the water-absorbing papers 16 covers the corrugated concave portion 14a except for the corrugated bottom portion 14a1 constituting the corrugated concave portion 14a and the upper end portions of both the inclined portions 14a2 of the inclined portions 14a2 on both sides thereof. The upper end portions on both sides are attached to both slope portions 14a2. Note that the entire surface of the water-absorbing paper 16 is
You may make it stick to a.

Next, the operation of the present embodiment will be described.

As shown in FIG. 2 and FIG.
When the cooling water W falls from each nozzle 20 to each corrugated bottom portion 14 of the folded plate roof 14, the cooling water W flows down along the corrugated bottom portion 14 toward the lower end of the gradient. At this time, since the corrugated concave portions 14a of the folded-plate roof 14 are covered with the water-absorbing paper 16, the cooling water W permeates over substantially the entire area of the water-absorbing paper 16 by capillary action. Therefore, the surface of each corrugated concave portion 14a is maintained in a wet state (wet surface) over substantially the entire area. Then, when the folded-plate roof 14 is heated by the solar radiation, the cooling water W that has permeated the water-absorbing paper 16 evaporates, and the corrugated concave portions 14a are cooled by the latent heat of vaporization.
At this time, each corrugated recess 14a is cooled to the maximum wet bulb temperature at that time.

As described in detail above, the roof cooling structure 10 according to the present embodiment is supplied from the water supply means 18 because substantially the entire area of each corrugated recess 14 a of the folded-plate roof 14 is covered with the water-absorbing paper 16. By using the cooling water, the folded-plate roof 14 can be cooled substantially uniformly while leaving the corrugated top 14b. At this time, the amount of cooling water to be supplied to the water-absorbing paper 16 is sufficient to maintain substantially the entire area of the water-absorbing paper 16 in a wet state, and this is effectively used for cooling the roof, thereby increasing the cooling efficiency. be able to.

Therefore, according to the present embodiment, it is possible to efficiently cool substantially the entire folded plate roof 14 substantially uniformly with a simple configuration. And by this, folded plate roof 14
The radiant heat from the roof surface to the lower indoor space can be reduced, and the environment can be improved.

Moreover, in the present embodiment, since the space above each water absorbing paper 16 is open to the atmosphere, the water absorbing paper 1
The transpiration of the cooling water W that has permeated into 6 is performed very smoothly, whereby high cooling efficiency can be obtained.

In the present embodiment, the supply of the cooling water W by the water supply means 18 is performed from each nozzle 20 of the folded plate roof 1.
In the above description, the cooling water W is dropped onto the water-absorbing paper 16 at the upper end of the gradient 4. However, since the space above each water-absorbing paper 16 is open to the atmosphere, water spraying using a sprinkler or the like is performed. It is also possible to supply the cooling water W. Even in such a case, the cooling water W penetrates over substantially the entire area of the water-absorbing paper 16 by capillary action, and the surface of each corrugated concave portion 14a is wet over substantially the entire area. Since the state (wet surface) is maintained, the same operation and effect as in the present embodiment can be obtained.

The water absorbing papers 16 used in the present embodiment are provided so as to cover only the corrugated concave portions 14a, and are provided so as to leave the upper ends of the two slope portions 14a2. This is a folded plate roof 14
Is generally composed of a plurality of steel plates, and in view of the fact that the joint is provided at or near the corrugated crest 14b, it is necessary to prevent cooling water from penetrating into the joint and causing problems such as rain leakage. This is to prevent it.

Instead of this, a packing or the like is provided at the joint of the steel plates constituting the folded-plate roof 14 to ensure waterproofness. May be covered. This makes it possible to cool the entire folded plate roof 14 more uniformly.

When it is not necessary to cool the folded plate roof 14 as in winter, the driving of the water supply pump 26 may be stopped to stop the water supply to the water absorbing papers 16. Further, the water supply amount to each water absorbing paper 16 may be controlled according to the necessity of cooling the folded plate roof 14.

Next, a second embodiment of the present invention will be described.

FIG. 5 shows a roof cooling structure 3 according to this embodiment.
FIG.

As shown, the basic structure of the roof cooling structure 30 is the same as the roof cooling structure 10 of the first embodiment, except that a flat steel plate 32 for covering the folded roof 14 is provided. This is different from the first embodiment.

The flat steel plate 32 is fixed to the folded roof 14 by welding, bolting, or the like so as to come into contact with each corrugated top 14b of the folded roof 14. Thereby, each corrugated concave portion 14a of the folded plate roof 14 and the flat steel plate 32
A space S having an inverted trapezoidal cross section extending in the rafter direction is formed between them.

By adopting the configuration of this embodiment,
The following operational effects can be obtained.

That is, in the first embodiment, since each of the water absorbing papers 16 is directly exposed to the external space, (1) the outflow of the water absorbing paper 16 by a large amount of rainwater (2) the scattering of the water absorbing paper 16 by the strong wind (3) (4) Deterioration of water-absorbing paper 16 due to ultraviolet rays (4) Plant growth from water-absorbing paper 16 due to light (5) There is a possibility that foreign matter (dust, fallen leaves, etc.) is deposited on water-absorbing paper 16.

On the other hand, in the present embodiment, since the flat steel plate 32 is provided as a covering member for covering the folded plate roof 14, it is possible to prevent such inconveniences from occurring. Further, by providing the flat steel plate 32, the rigidity of the folded plate roof 14 can be increased.

In this embodiment, the water absorbing paper 16
After evaporating, the cooling water W that has permeated becomes steam, flows along the space S toward the upper end of the gradient, and is discharged from the upper end of the gradient to the external space.

Next, a third embodiment of the present invention will be described.

FIG. 6 shows a roof cooling structure 4 according to this embodiment.
FIG.

As shown, this roof cooling structure 40 is
The second embodiment is different from the second embodiment in that a folded plate 42 is used as a covering member for covering the folded plate roof 14 and a water absorbing paper 44 is provided so as to cover the entire surface of the folded plate roof 14.

As the folded plate 42, the roof material constituting the folded plate roof 14 is used as it is, and the water absorbent paper 44 is sandwiched between the corrugated bottom portion 42 a and the corrugated top portion 14 b of the folded plate roof 14 so that the folded plate roof 14 is formed. Fixed.

Even when the configuration of this embodiment is adopted, the same operation and effect as in the second embodiment can be obtained. Moreover, in the present embodiment, since the water-absorbing paper 44 is provided over the entire surface of the folded plate roof 14, the whole folded plate roof 14 can be uniformly cooled. Further, in the present embodiment, the corrugated concave portion 1 of the folded plate roof 14 is used.
Since the cross-sectional area of the space S between the 4a and the folded plate 42 can be increased, the transpiration of the cooling water W that has permeated the water-absorbing paper 44 can be smoothed. Further, in the present embodiment, the rigidity of the folded plate roof 14 can be further increased, and the corrugated bottom 42a of the folded plate 42 can be used as a flow path for rainwater.

Next, a fourth embodiment of the present invention will be described.

FIG. 7 shows a roof cooling structure 5 according to this embodiment.
FIG.

As shown, the roof cooling structure 50 is
The second embodiment is different from the second embodiment in that a reed 52 is used as a covering member for covering the folded plate roof 14.

The reed curtain 52 is fixed to the corrugated top 14b of the folded-plate roof 14 with a stopper (not shown) while being stretched in a flat plate shape. In the figure, the reed 52 is the reed 5
Although 4 is provided so as to extend in the rafter direction, it may be provided so as to extend in the purlin direction.

When the configuration of this embodiment is adopted, the effects of the above (1) to (5) are slightly inferior to those of the second embodiment, but the following effects can be obtained. it can.

That is, each corrugated recess 14 of the folded plate roof 14
Since the space S between the reed 52 and the reed 52 is not sealed, the cooling water W that has permeated the water-absorbing paper 16 evaporates and then escapes from the gap between the reeds 54 of the reed 52 to the external space. Can be prevented from being greatly hindered by the provision of the covering member. Also,
It is also possible to perform sprinkling supply using a sprinkler or the like.

Next, a fifth embodiment of the present invention will be described.

FIG. 8 shows a roof cooling structure 6 according to this embodiment.
FIG.

As shown, this roof cooling structure 50 is
The second embodiment differs from the second embodiment in that a heat insulating material 62 is used as a covering member for covering the folded plate roof 14.

The heat insulating material 62 is made of, for example, hard urethane foam.
b, and is fixed to the folded plate roof 14 by bolts or the like.

Even when the configuration of this embodiment is adopted, the same operation and effect as in the second embodiment can be obtained. Moreover, in the present embodiment, the temperature rise of the folded plate roof 14 due to the solar radiation can be suppressed by the interposition of the heat insulating material 32. Further, by providing the heat insulating material 62, it is possible to reduce heat loss in the indoor space of the building 12 in winter and also to prevent dew condensation.

Next, a sixth embodiment of the present invention will be described.

FIG. 9 shows a roof cooling structure 7 according to this embodiment.
FIG.

As shown, this roof cooling structure 70
Although the structure is similar to the roof cooling structure 60 of the fifth embodiment,
The fifth embodiment is different from the fifth embodiment in that a slate-made corrugated roof 72 is used instead of the folded-plate roof 14 and the water-absorbing paper 44 is provided so as to cover the entire surface of the corrugated roof 72. .

In the case where the configuration of this embodiment is adopted, the same operation and effect as in the fifth embodiment can be obtained. Further, in the present embodiment, since the water absorbing paper 44 is provided over the entire surface of the corrugated sheet roof 72, the entire corrugated sheet roof 72 can be uniformly cooled.

Next, a seventh embodiment of the present invention will be described.

FIG. 10 is a cross-sectional view showing the roof cooling structure 80 according to the present embodiment and its peripheral structure along the roof gradient.

As shown in the figure, the basic structure of the roof cooling structure 80 is the same as that of the roof cooling structure 60 of the fifth embodiment.
A ventilation promoting structure 82 for promoting ventilation of the space S between the heat insulating material 4a and the heat insulating material 62 and a cover 84 for closing the space S are provided.
The fifth embodiment is different from the fifth embodiment in that a bird net 86 and a gutter 88 are provided to cover the bird net.

The ventilation promoting structure 82 includes a chimney 90 penetrating through the heat insulating material 62 and communicating with the space S, and a rotary exhaust pipe 92 attached to an upper end of the chimney 90. In the ventilation promoting structure 82, the rotating part (not shown) of the rotary exhaust pipe 92 is rotated by wind power to generate a negative pressure in the chimney 90, whereby the space S between the corrugated recess 14a and the heat insulating material 62 is formed. Is sucked and discharged to the external space. The ventilation promoting structure 82 is provided for each corrugated recess 14a.

The cover 84 at the upper end of the slope serves to easily decompress the space S and prevent foreign matter from entering the space S. This is for preventing a bird or the like from inadvertently entering the space S.

In this embodiment, the ventilation promoting structure 82
To provide each corrugated concave portion 14a of the folded plate roof 14.
Ventilation of the space S between the heat insulating material 62 and the heat insulating material 62 can be promoted, so that latent heat of vaporization can be continuously removed with high efficiency from the surface of the folded plate roof 14, thereby further increasing the cooling efficiency. it can.

Next, an eighth embodiment of the present invention will be described.

FIG. 11 is a cross-sectional view of the roof cooling structure 100 according to the present embodiment and its peripheral structure along a roof gradient, and FIG. 12 is a detailed view of the XII portion.

As shown in FIG. 11, this roof cooling structure 1
In the same manner as in the second embodiment, the ventilation promotion structure 102 is provided at the upper end of the slope of the folded plate roof 14, and the bird net 86 and the gutter 88 are provided at the lower end of the slope of the folded plate roof 14. The configuration of the ventilation promotion structure 102 is different from that of the ventilation promotion structure 82 of the sixth embodiment.

That is, the ventilation promoting structure 102 includes a ventilation opening 104 which forms an upward exhaust space E communicating with each space S of the folded-plate roof 14 and the indoor space R of the building 12;
A damper 106 provided to close the exhaust space E inside the ventilation opening 104 and an exhaust space E
Grid 108 provided between the air and the indoor space R
And a ventilation attraction wing 110 provided near the upper side of the ventilation opening 104.

The ventilation opening 104 has three side walls provided at the upper end of the outer peripheral wall 12 a of the building 12.
12 and the remaining one side wall located at the upper end of the gradient is formed by the heat collecting member 114,
It has an opening shape elongated in the purlin direction.

The heat insulating material 112 is supported on the outer peripheral wall 12a via the reinforcing material 116.

On the other hand, as shown in FIG. 12, the heat collecting member 114 is made of a black metal plate (a steel plate or the like whose surface is coated with black).
118, and an L-shaped transparent panel 120 provided at a predetermined interval outside the black metal plate 118,
Between the black metal plate 118 and the transparent panel 120,
A closed air layer is formed. Thereby, sunlight is incident on the black metal plate 118 through the transparent panel 120, and the black metal plate 1
18 is heated, and heat near the surface of the black metal plate 118 is stored in the air layer to increase the heating efficiency of the black metal plate 118. The heat collecting member 11
4 is supported by a reinforcing member 122 provided on the inner surface side.

By providing such a ventilation promoting structure 102, the following operation and effect can be obtained.

That is, when the heat collecting member 114 is heated by the solar heat, the temperature of the exhaust space E rises due to the radiant heat, so that the air in the exhaust space E forms an ascending airflow, and the air in each space S is thereby cooled. The space S is drawn to the exhaust space E to ventilate the space S. At that time, since the radiant heat from the heat collecting member 114 is stored in the heat insulating material 112 disposed opposite to the heat collecting member 114, the temperature rising efficiency of the exhaust space E can be increased.

Further, since the indoor space R also communicates with the exhaust space E, the air in the indoor space R (which is higher in temperature than the air in each space S) is drawn by the air flow when flowing into the exhaust space E. Ventilation of each space S is achieved.

Further, since the ventilation inducing wing 110 is provided near the upper side of the ventilation opening 56, the air passing through the space between the ventilation opening 104 and the ventilation inducing wing 110 discharges the air in the exhaust space E. Is prompted,
This also allows ventilation of each space S.

As described above, in the present embodiment, by providing the ventilation promoting structure 102, ventilation of the space S between each of the corrugated recesses 14a of the folded-plate roof 14 and the heat insulating material 62 can be promoted. Latent heat of vaporization can be continuously removed from the surface of the folded plate roof 14 with high efficiency, thereby further improving the cooling efficiency.

Moreover, the ventilation promoting structure 52 utilizes the radiant heat from the heat collecting member 114, the exhaust airflow from the indoor space R, and the ventilation induction airflow from the ventilation induction wing 110 to cause natural convection due to the chimney effect in each space S. Is easily raised, and the ventilation of the space S can be promoted with a simple configuration and without requiring new driving energy. Moreover, it is necessary to enhance the cooling efficiency by promoting ventilation as described above when the solar radiation is strong. In such a case, the solar heat energy for heating the heat collecting member 64 is large, and the temperature of the indoor space R also increases. As a result, ventilation is inevitably promoted, so that efficient ventilation can be performed in response to the need.

In the present embodiment, although the upward ventilation opening 104 is provided, the ventilation inducing wing 110 is provided near the upper part thereof, so that the rainwater flows into the ventilation opening 104. Inflow can be prevented.

Since the damper 106 is provided in the exhaust space E, when it is not necessary to cool the folded plate roof 14 as in winter or the like, the supply of water to the water absorbing paper 16 is stopped and the damper 106 is used. By closing the exhaust space E, the heat of the indoor space R can be maintained. In addition,
The damper 106 may be of a manual opening / closing type, or may be of a type that automatically opens and closes in conjunction with the start / stop of the water supply pump 26.

In this embodiment, the ventilation opening 10
The wall on the side of the outer peripheral wall 12a that constitutes 4 is made of the heat insulating material 112, and the wall facing the outer wall 12a is made of the heat collecting member 114. In this case, the positional relationship between the heat insulating material 112 and the heat collecting member 114 may be reversed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a building provided with a roof cooling structure according to a first embodiment of the present invention.

FIG. 2 is a main part plan view showing the roof cooling structure according to the first embodiment.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is an essential part cross-sectional view showing a state of adhering water-absorbing paper to a folded-plate roof in the first embodiment.

FIG. 5 is a sectional view of a main part showing a roof cooling structure according to a second embodiment of the present invention.

FIG. 6 is an essential part cross-sectional view showing a roof cooling structure according to a third embodiment of the present invention.

FIG. 7 is a sectional view of a main part showing a roof cooling structure according to a fourth embodiment of the present invention.

FIG. 8 is a sectional view of a main part showing a roof cooling structure according to a fifth embodiment of the present invention.

FIG. 9 is a sectional view of a main part showing a roof cooling structure according to a sixth embodiment of the present invention.

FIG. 10 is a cross-sectional view along a roof gradient, showing a roof cooling structure and a peripheral structure according to a seventh embodiment of the present invention.

FIG. 11 is a cross-sectional view along a roof gradient, showing a roof cooling structure and a peripheral structure according to an eighth embodiment of the present invention.

FIG. 12 is a detailed view of a part XII in FIG. 11;

[Explanation of symbols]

10, 30, 40, 50, 60, 70, 80, 100
Roof cooling structure 12 Building 12a Outer peripheral wall 14 Folded-plate roof (roof) 14a Corrugated recess 14a1 Corrugated bottom 14a2 Slope 14b Corrugated top 16,44 Water-absorbing paper (water-absorbing coating material) 18 Water supply means 20 Nozzle 22 Water supply pipe 24 Water supply source 26 Water feed pump 32 Flat steel plate (water-impermeable member) (covering member) 42 Folded plate (water-impermeable member) (covering member) 42a Corrugated bottom 52 Reed screen (blind-shaped member) (covering member) 54 Reed 62 Insulation material (covering) 72) Corrugated roof (roof) 82 Ventilation promotion structure 84 Cover 86 Birdproof net 88 Gutter 90 Chimney 92 Rotating exhaust tube 104 Ventilation opening 106 Damper 108 Exhaust grid 110 Ventilation wing 112 Insulation material 114 Heat collecting member 116 , 122 Reinforcement 118 Black metal plate 120 Transparent panel E Exhaust space R Indoor space S Waveform Space between recess and heat insulator W Cooling water

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Seiichi Ikehara 13-4 Arakicho, Shinjuku-ku, Tokyo Sumitomo Construction Co., Ltd. F-term (reference) 2E001 DD11 DD12 DD14 FA16 GA15 GA25 HC07 HF04 JA22 JA25 NA07 NB04 ND28 2E108 AA04 BN05 BN06 CC01 CC15 GG06 GG08 GG16 GG18

Claims (7)

[Claims] 1. A roof cooling structure for cooling a roof having a substantially corrugated cross-section, comprising: a water-absorbing coating material that covers substantially the entire area of each corrugated recess of the roof so as to be in close contact with the surface of the roof; A roof cooling structure comprising: a water supply means for supplying cooling water to the water-absorbing coating material. 2. The roof cooling structure according to claim 1, further comprising a covering member that covers the roof so as to abut on each of the corrugated tops of the roof. 3. The roof cooling structure according to claim 2, wherein said covering member is formed of a water-impermeable member. 4. The roof cooling structure according to claim 2, wherein said covering member is made of a heat insulating material. 5. The roof cooling structure according to claim 2, wherein said covering member is formed of a blind member. 6. The roof is formed with a predetermined slope, and a ventilation promoting structure is provided at the upper end of the roof to promote ventilation of a space between each corrugated recess of the roof and the covering member. The roof cooling structure according to any one of claims 2 to 5, wherein 7. The roof cooling structure according to claim 6, wherein the ventilation promoting structure includes a heat collecting member heated by solar heat.